JPH07186108A - Dust collecting cover - Google Patents

Abstract

PURPOSE:To obtain high dust collecting efficiency while avoiding the interference with a work. CONSTITUTION:A dust collecting cover is equipped with cover main bodies 11a-11d covering the peripheral edge and one side surface of a rotary blade l and the duct connection part 12 connected to the suction duct 19 communicating with the cover main bodies and formed in a bent state so as to extend to the side opposite to a work with respect to the axial line of the cover main bodies. An inclined guide 14 guiding the cut refuse issued from the place to be cut of the work in the axial line direction of the duct connection part is attached to the inner surface of the connection part of the cover main bodies and the duct connection part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a chip provided on the outer periphery of a rotary blade for cutting off a side end portion of a work and one side surface of the rotary blade so as to cover the peripheral edge and one side surface of the work blade, the chips being cut out from a cut portion of the work during cutting. It is related to the dust collecting cover that collects so as not to scatter outside.

[0002]

2. Description of the Related Art For example, a wooden panel used for constructing a prefabricated house has a face material attached to both sides of a frame body assembled into a rectangular contour, and the face material attached thereto. The frame material is sent to a sizer device, and the four front, rear, left, and right end surfaces are respectively subjected to sizer processing, so that the frame material is finished to a predetermined size.

In the sizer, for example, a circular saw blade is provided at the side end of the table, while a wooden panel, which is a workpiece, is placed on the table, and the rotary blade is rotated to the wooden panel. The structure is such that the end face of the wooden panel is cut off by moving the rotary blade relatively in the surface direction.

[0004] Usually, a dust collecting cover is attached to the outside of the rotary blade for collecting chips generated from a cut portion of the work during cutting so as not to scatter to the outside. In this type of conventional dust collecting cover, the cover main body that covers the outside of the rotary blade and the duct connecting portion that connects the suction duct extending from the blower to the cover main body are arranged such that their axial directions are parallel to each other. It is said to have a different structure.

[0005]

The conventional dust collecting cover described above has the following problems. The chips coming out of the work to be cut off fly vigorously in the tangential direction of the rotary blade, so in order to collect such chips efficiently, the duct connection part and the suction duct connected to it are used as the rotary blade. It is preferable to arrange them on the same plane.

However, with such an arrangement, the duct connecting portion and the suction duct interfere with the relatively transferred work, especially the cut work. For this reason, in the past, in order to avoid interference with the work, it is the current situation that the duct connection part is arranged laterally away from the rotary blade. There was a problem that it could not be collected well.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dust collecting cover which can obtain high dust collecting efficiency while avoiding interference with a work.

[0008]

In order to achieve the above object, the invention according to claim 1 is provided outside the rotary blade so as to cover the peripheral edge and one side surface of the rotary blade for cutting off the side end portion of the work. A dust collecting cover that collects chips that come out of the cut portion of the work during cutting so as not to scatter to the outside, and a cover body that covers the peripheral edge and one side surface of the rotary blade, and communicates with the cover body. And a duct connecting portion connected to the suction duct by being bent so as to extend to the side opposite to the work with respect to the axis of the cover main body, and the inner surface of the connecting portion between the cover main body and the duct connecting portion. Is attached with an inclined guide for guiding the chips coming out of the cut portion of the work in the axial direction of the duct connection portion.

According to a second aspect of the present invention, an air intake port is formed on a side surface of the connecting portion between the cover body and the duct connecting portion on the side of the work.

[0010]

According to the first aspect of the present invention, since the duct connecting portion is bent and formed so as to extend toward the side opposite to the work with respect to the axis of the cover body, the duct connecting portion and the suction connected thereto. The duct does not interfere with the work. In addition, an inclined guide is provided on the inner surface of the connecting portion between the cover body and the duct connecting portion, and the chips that vigorously jumped out with the rotation of the rotary blade hit the inclined guide, so that the protruding direction is the duct connection. It is forcibly changed to the suction direction along the part. Therefore, the chips are smoothly sucked into the suction duct.

According to the second aspect of the present invention, the air intake port is formed on the side surface of the work side of the connecting portion between the cover body and the duct connecting portion, and the air flows into the dust collecting cover from this side. Thus, when the air flows into the inside from the middle part of the dust cover, the chips that have once leaked to the outside of the dust cover enter the dust cover along with the flow of the air. In other words, the chips that have once leaked to the outside of the dust collecting cover can be collected again, and as a result, the collection rate of chips improves.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a rotary blade, 2 is a motor for rotating the rotary blade, and they are arranged at a side end portion of the work transfer table 4. The work W on the work transfer table 4 and the rotary blade 1 are moved relative to each other.
While being fixed at the predetermined position above, the rotary blade 1 is adapted to be moved along the side end of the work transport table 4, whereby the side end of the work W is cut off.

A dust collecting cover 10 is provided outside the rotary blade 1.
Is provided so as to cover the peripheral edge and one side surface of the rotary blade 1,
The dust collecting cover 10 collects chips generated from the cut portion of the workpiece W during cutting so as not to scatter to the outside. The dust collecting cover 10 is provided so as to cover the side surface of the rotary blade 1 on the side opposite to the uncut portion of the work W, in other words, the portion to be the product. Dust cover 10
Is a cover body 1 that covers the peripheral edge and one side surface of the rotary blade 1.
1 and a duct connecting portion 12 that is formed to be in communication with the cover body 11 and that is bent so as to extend to the side opposite to the uncut portion of the work W with respect to the axis of the cover body 11. There is.

The cover body 11 covers the peripheral edge of the rotary blade 1 and extends in the direction in which the chips coming out of the rotary blade 1 extend, and the left and right side plate portions 11b of the substantially triangular shape which cover the side surfaces of the rotary blade 1. , 11c and a lower cover 11d. A sponge sheet 13 is attached to the upper portion of the cylindrical portion 11a by a screw 13a in a state in which the sponge sheet 13 projects from the rotary blade 1 to the opposite side of the motor 2. The side plate portion 11b on the motor 2 side is an output shaft 2a of the motor 2.
Is attached in a fully closed state so as to cover the side surface of the rotary blade 1 except for the penetrating portion that penetrates. On the other hand, the side plate portion 11c on the opposite side of the motor 2 is composed of an upper cover 11ca that closes the oblique upper portion of the rotary blade 1 and a side cover 11cb that extends in the protruding direction of the chips coming out of the rotary blade 1.
As shown in, the upper cover 11ca is attached on the substantially same plane as the rotary blade 1, and the side cover 11cb is attached so as to be located on the motor 2 side of the rotary blade 1. And
The side cover 11cb and the cylindrical portion 11 which constitute the side plate portion 11c
An opening 20 for allowing air to flow into the cover main body 11 is formed between the opening 20 and a.

The side cover 11cb of the side plate portion 11c is provided with inclined guides 14, 14 made of a flexible material bent in a V-shaped cross section and extending in the vertical direction and in the front-back direction (here, the cutting by the rotary blade 1). It is attached at a predetermined interval in the direction in which the direction in which waste is ejected is defined as the front-back direction. An air intake port 16 is formed by cutting and raising a part of the side plate portion 11c on the opposite side of the motor 2 at a front portion of the rear side inclined guide 14 of the both inclined guides 14, 14.

As shown in FIG. 4, the lower cover 11d is formed by a plate-shaped member extending from the cover body 11 to the lower portion of the work transfer table 4 below the rotary blade 1.
It is provided so as to extend from a position below the center of the rotary blade 1 to a lower portion of the rear end of the cover body 11 and at a position displaced from the center of the cover body 11 to the rotary blade 1 side. Bottom box 11
A sealing material 18 made of a flexible material is bonded to the rear end of d.

The duct connecting portion 12 is a cover body 11
It is connected to the rear end and is bent and formed on the side opposite to the work W with respect to the axis of the cover body 11, in other words, on the motor 2 side. Further, as shown in FIG. 2, an inclination angle θ of the duct connecting portion 12 with respect to the cover body 11 is set so that an extension line m at the center of the duct connecting portion 12 passes through a substantially rear end of the rotary blade 2. Further, as shown in FIG. 1, the center height of the suction port 12a at the rear end of the duct connecting portion 12 is set to be substantially the same as the lower end of the rotary blade 1. Also,
The suction port 12a of the duct connecting portion 12 is arranged so as to be separated from the rotary blade 2 as compared with the conventional one, specifically, at a position where the speed of the chips protruding in the tangential direction of the rotary blade 2 is rapidly reduced. . Reference numeral 19 is a suction duct connected to the contact and connection portion 12.

Next, the operation of the dust collecting cover having the above structure will be described. The work W transported on the work transport table 4 is positioned at a predetermined position on the work transport table 4, and in this state, the rotary blade 1 is rotated by the motor 2 and the end of the work W is moved by a moving device (not shown). Moved along the department. As a result, the side end of the work W is cut off.

Here, in this dust collecting cover 10, the duct connecting portion 12 is bent and formed so as to extend toward the side opposite to the work W with respect to the axis of the cover body 11, so that the duct connecting portion 12 and the duct connecting portion 12 are cut during cutting. The suction duct 19 connected to it does not interfere with the work W.

Further, when the work W is cut by the rotary blade 2, chips from the cut portion of the work W will fly out along the tangential direction of the rotary blade 1. The cover body 1 together with the air sucked from the opening 20 formed in the side portion of the work 11 on the work side.
It flows into 1. And the chips that flowed in were
As shown in FIG. 2, after passing through the inside of the cover main body 11 along the axial direction, by hitting the inclined guide 14 provided on the inner surface of the connecting portion between the cover main body 11 and the duct connecting portion 12, the protruding direction is changed. It is forcibly changed in the suction direction along the duct connection 12. Therefore, the chips are smoothly sucked into the suction duct 19 via the duct connecting portion 12.

Further, in the dust collecting cover 10, an air suction port 16 is formed on the side surface on the work side of the connecting portion between the cover body 11 and the duct connecting portion 12, from which air is introduced into the dust collecting cover 10. Inflow. In this way dust cover 1
When air flows in from the middle part of 0, chips that have leaked to the outside of the dust collecting cover 10 once enter the dust collecting cover 10 along with the flow of the air. That is, once
The chips that have leaked to the outside of the dust collecting cover 10 can be collected again, and as a result, the collection rate of chips improves.

In addition, in this embodiment, the duct connecting portion 1
Since the center height of the two suction ports 12a is set to be substantially the same as the lower end of the rotary blade 1, and since the chip has the highest proportion of being horizontally ejected from the lower end of the rotary blade 1 along the tangential direction, It is possible to efficiently collect the chips that are ejected from the cut portion of those works. Further, since the suction port 12a of the duct connecting portion 12 is far away from the rotary blade 1 and suction is performed by the suction duct 19 when the chip ejection speed becomes slow, the chip ejection speed is effectively utilized. The chips can be sucked in in the open state.

Further, the work W is placed on the upper part of the cover body 11.
Since the sponge sheet 13 is attached in a state of overhanging to the side and the lower cover 11d covers the lower end of the cover body 11 and the work transfer table 4, it is more difficult to cut than the conventional dust collecting cover. Litter is less likely to leak to the outside, which also improves the chip collection efficiency.

The dust collecting cover 10 of the present invention is not limited to the above-mentioned embodiment, but the shape of the cover main body 11 and the duct connecting portion 12, the number and size of the air suction ports 15, etc.
The specific constituent requirements can be appropriately changed in implementation.

For example, in the above embodiment, the duct body 11
When connecting the duct connecting portion 12 and the duct connecting portion 12, the both are directly connected without interposing an intermediate member or the like between them, but the present invention is not limited to this, and an intermediate connecting member or the like made of a flexible material is interposed therebetween. You may make it connect. Further, in the above embodiment, only one air intake port 16 is provided on the side portion of the duct body 11, but the present invention is not limited to this, and a plurality of air intake ports 16 may be provided.

[0026]

According to the invention described in claim 1, since the duct connecting portion is bent and formed so as to extend to the side opposite to the work with respect to the axis of the cover body, the duct connecting portion and the duct connecting portion are connected to the duct connecting portion. The suction duct does not interfere with the work. In addition, an inclined guide is provided on the inner surface of the connecting portion between the cover body and the duct connecting portion, and the chips that vigorously jumped out with the rotation of the rotary blade hit the inclined guide, so that the protruding direction is the duct connection. Since the suction direction along the part is forcibly changed, the chips are smoothly sucked into the suction duct, and the chip collection efficiency is improved.

According to the second aspect of the present invention, since the air suction port is formed on the work side surface of the connecting portion between the cover main body and the duct connecting portion, the air flows into the dust collecting cover from there. The chips that have once leaked to the outside of the dust collecting cover can be collected again, and as a result, the collection rate of chips is further improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is a view taken along the line Haha in FIG.

FIG. 5 is a diagram showing an air flow in the dust collecting cover of the embodiment.

[Explanation of symbols]

 1 Rotary Blade 2 Motor 4 Work Transfer Table 10 Dust Collection Cover 11 Cover Body 12 Duct Connection 13 Sponge Sheet 14 Tilt Guide 16 Air Suction Port 19 Suction Duct

Claims (2)

[Claims] 1. A chip is provided outside the rotary blade so as to cover the peripheral edge and one side surface of the rotary blade that cuts off the side end of the work, and scatters chips generated from the cut portion of the work during cutting. A cover body that covers the peripheral edge and one side surface of the rotary blade, and is bent so as to communicate with the cover body and extend toward the opposite side of the workpiece with respect to the axis of the cover body. A duct connecting portion that is formed and connected to the suction duct, and the inner surface of the connecting portion between the cover main body and the duct connecting portion has chips coming out of a cut portion of the work of the duct connecting portion. A dust collecting cover characterized in that an inclined guide for guiding in the axial direction is attached. 2. The dust collecting cover according to claim 1, wherein an air suction port is formed on a side surface of the work side of a connecting portion between the cover body and the duct connecting portion. Dust cover.